Universal welding-clamp



R. COWAN. UNIVERSAL WELDING CLAMP. APPLICATION msn r11-:0.19. 1919.

UNITED STATES RICHARD Cowan, or CLIMAX, MINNESOTA.

UNIVERSAL WELDING-CLAMP.

To ZZ whom may concer/n.

Be it known that l, RICHARD 'Coun-iN, a

citizen ot the United States, resident of Climax, county ot Polk, State oi Minnesota, have invented certain-new and useful Tmprovements in Universal* lVelding-Clamps, of which the following is a speciication.

In the operation of welding with an acetylene llame, it is necessary to support or block up the parts to be welded so that the broken edges will fit together squarely and evenly when the parts are united. Considerable time and labor is often required in blocking up the pieces to be welded or supporting them in the desired welding position, and the object of my invention is to provide a clamp so constructed that the two piecesv to be united can be held in the exact welding position without danger ot slippage and allowing the operator of the torch to have 'free use ot both hands during the welding operation.

A further object is to provide a supporting clamp which will allow the parts that are to be united to be tilted or turned to any desired angle or position for convenience in welding. l Y

The invention consists generally in various constructions and combinations, all as hereinafter described and particularly pointed out in the claims.

ln the accompanying drawings forming part of this specification,

Figure 1 is a front view of a welding clamp embodying my invention,

Fig. 2 is a sectional view on the line 2 2 ot Fig. l,

Fig. 3 is a sectional view on the line 3-3 of Fig. 1,

Fig. 4 is a sectional view on the line A-f of Fig. '1,

Fig. 5 is a detail view of one ot the clamping jaws in its open position.

.n the drawing, 2 represents a rod or other support and 3 is aclamp encircling this rod and having holes in its ends to receive a holt 4 that is'provided with an interiorly threaded nut 5 i'or tightening the bolt on the clamp and drawing the metal portion of the clamp snugly against the surface of the rod 2. The nut 5 has a socket to receive a pin or nail t3 by means .of which the nut may be revolved and the bolt tightened. A similar clamp 3 is provided, having ends through which the bolt 4 passes, the clamp encircling a stud or suitable support 2PL on which the clamp 3a is Specification of Letters Patent.

Application led December 19, 1919.

Patented Aug. 2, 1921.

Serial No. 346,070.

slidable horizontally and may also rotate to i allow adjustment of the clamp 3 in different positions with respect to the stud 2a. This manner of supporting the clamp 3 permits the operator totilt the entire clamping device to any convenient position for welding.

The rod 2 is provided with clamps 3" mounted on each end thereof and similar clamps 3c through the medium of bolts la and nuts 5a corresponding substantially to those described with reference to Fig. 4. The clamps 3 have vertical sockets to receive upright rods 7 which have inwardly turned goose necks 8 terminating in balls 9.

Clamps 10 having gripping jaws 11 and 12- are provided and one end of each jaw has a socket 13 'formed therein to receive the ball 9 and formA a ball and socket bearing for the jaw, the ends of the jaws having the socket ybeing held in place by a link 14. A threaded pin 15 is mounted in one aw and passes through an opening in the other jaw and is provided with a wing nut 16 by means of which the gripping ends of the jaws 11 and 12 may be forced toward each other to clamp the article between them. A spring 17 normally holds the aws 11 and 12 in their separated position.

In Fig. 1 I have shown two pieces of metal M and M2L supported at one end in the clamping jaws with the nozzle of the welding torch T interposed in position to apply the welding flame to the break in the metal. These breaks are irregular and it is a diiiicult operation to block up the pieces of metal so that the broken edges will iit snugly and evenly together and for the operator to apply the welding flame with the use of both hands. With my clamp this can easily be done. One piece of the part to be welded is inserted in one jaw and the other tits in the other aw and then the jaws are rocked and turned on their ball bearings or the supporting rods are turned on their swivels until the two pieces oi: metal are in the same relative position as they were before the break occurred. Then the welding flame can be applied and the parts permanently united.

l claim as my invention: j

1. A welding clamp comprising a rod and a supporting clamp for adjustment of said rod on a horizontal axis, clamps mounted on the end portions of said rod, upright standards having bearings in said clamps and mountedV to rotate and slide vertically therein, the upper ends of said standards having accurate littin inwardly turned goose necks formed thereon and jaws mounted at onerend on said goose necks and extending inwardly in opposing relation for supporting the articles to be welded, and said jaws having universal adjustment on said goose necks to allow the g together of the edges of the articles to he welded.

2. A welding clamp comprising a sub' stantially straight rod and a supporting clamp foradjustment of said rod on a horizontal axis and rota-tion of said rod on a longitudinal axis, clamps mounted on the end vportions ofsaid rod, upright standards having hearings in said clamps to slide ver- 15V wardly in opposing relation for Vsupporting 20 the articlesto be welded, said jaws having universal adjustment on said goose necks to allow the accurate litting together of the edges ofthe article 'to be welded.

In witness whereof, l have hereunto set 25 my handthis 8th day of December 1919.

` RICHARD oowAN. 

